c# - "using" of two different libraries with almost identical functions -

i'm consuming soap web service. web service designates separate service url each of customers. don't know why that. functions , parameters technically same. if want write program service have know each company intended. means company called "apple" have use following using statement:

using dmdelivery.apple; 

and other called "orange"

using dmdelivery.orange; 

but program work of them , have name of company or service reference point parameter.

update: if have write separate application each customer have keep of them updated each other every small change , 1 heck of inefficient job number of customers increase.

can think of solution? i'll grateful.

if have base contract (interface) services can use kind of factory instantiate concrete service , have reference interface in client code (calling code).

//service interface public interface ifruitservice{   void someoperation(); }  //apple service public class appleservice : ifruitservice{   public void someoperation(){     //implementation   } } 

having example kind of factory class (you can put using statements here)

public static class servicefactory{   public static ifruitservice createservice(string kind){     if(kind == "apple")       return new appleservice();     else if(kind == "orange")       return new orangeservice();     else       return null;   } } 

and in calling code (you add using statement namespace containing interface):

string fruitkind = //get configuration ifruitservice service = servicefactory.createservice( fruitkind ); service.someoperation(); 

you can use dependency injection principle.